<!DOCTYPE html>
<script>
if (window.testRunner)
    testRunner.dumpAsText();
</script>
<svg>
  <feConvolveMatrix order="0"/>
  <feConvolveMatrix order="0.49999999"/>
  <feConvolveMatrix order="0.5"/>
  <feConvolveMatrix order="-1"/>
  <feConvolveMatrix order="1 0"/>
  <feConvolveMatrix order="1 0.49999999"/>
  <feConvolveMatrix order="1 0.5"/>
  <feConvolveMatrix order="1 -1"/>
  <feConvolveMatrix order="1 one"/>
  <feConvolveMatrix order="one two"/>
</svg>
